After a nerve impulse occurs, the neuron is temporarily less likely to fire because
a. the cell is still above its resting level.
b. potassium ions flow out of the neuron while the ion channels are open.
c. acetylcholine acts as an inhibitor.
d. a positive after-potential has occurred.
B
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Studies comparing the brain images of children with ADHD with those with ADHD and other disorders have found
a. differences in brain chemistry between the two groups. b. no differences in brain chemistry. c. similarities in the brain chemistry among the boys in both groups. d. similarities in the brain chemistry among the girls in both groups.
The criterion of maladaptive behavior used in determining whether behavior is abnormal would likely to be applied to which of the following cases?
a. Jonathan, who is hearing voices b. Quincy, who is experiencing some symptoms of depression but is still functioning adequately. c. Nate, who has developed a drug abuse problem that is affecting his health. d. Tricia, who behaves in ways other people consider deviant. e. Leslie, who believes he is hounded by demons.
Which statement about optimism is FALSE?
A) Optimism is moderately heritable. B) Levels of optimism tend to fluctuate across the lifetime. C) Optimists tend to have better cardiovascular health. D) Pessimists can be trained be become more optimistic.